Presses



(No Model.) I BSheets-Sheet 14 C. B. GOTTRELL. I

DELIVERY APPARATUS FOR PRINTING PRESS'BS. No. 260,945, Patentqd July 11,1882.

N. PETERS. Phvta-Lirhu n mr. Washingtun. D c.

(110 Model.) 3 Sheets--Sheet 2.

O. B. OOTTRELL.

DELIVERY APPARATUS FOR PRINTING PRESSES. No. 260,945.

Patented July 11-, 1882.

N. PETERS, PhahrLilhugmphun Washin ton. D.c.

(No Model.) 3 Sheets-Sheet 3.

0. B. GOTTRELL. I

DELIVERY APPARATUS FOR PRINTING PRESSES. No.'260,945. Patented July 11,1882.

UNITED STATES PATENT OFFICE.

CALVERT B. OOTTRELL, OF WESTERLY, RHODE ISLAND.

DELIVERY APPARATUS FOR PRlNTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 260,945, dated July 11,1882.

.Application filed March 29, 1881. (No model.)

To all whom it may concern:

Be it known that I, CALVERT B. CoTTRELL, of Westerly, in the county ofWashington and State of Rhode Island, have invented certain new anduseful Improvements in Sheet- Delivery Apparatus for Cylinder Printing-Presses, of which the following is a specification,reference being hadto the accompanying drawings.

This invention, which is applicable either to two-revolution cylinder orstop-cylinderpresses, relates to delivery apparatus in which grippersare employed to take the sheet from the impression-cylinder of the pressand carry it to and deliver it upon a receiving-table with the printedside upward without the use of tapes.

The invention consists in the combination, with the impression-cylinder,of folding grippercarrying rods of peculiar construction, whereby agreatly-accelerated movement of the grippers is obtained, and in certaindetails of mechanism in combination with such folding rods.

1n the accompanying drawings, Figure l is a side elevation of such ofthe parts of a tworevolution cylinder printing-press as are necessary toillustrate my invention, showing the delivery-grippers in position fortaking the sheet. Fig. 2 is a plan corresponding with Fig. 1, but havingthe feed-board omitted to expose to view those portions of thesheet-delivery apparatus which are under the feedboard. Fig. 3 is a sideview, representing the principal parts visible in Fig. 1, but showingthem with the delivery-grippers in position for depositing the sheet onthe receiving-table. Fig. 4 is a back view, partly in section,corresponding with Fig. 3. Fig. 5 is a side view of the principal partsemployed to move the delivery-grippers from the cylinder to thereceiving-table, showing them in a position intermediate between thepositions shown in Figs. 1 and 3. Fig. 6 is a detail view, which will behereinafter explained.

A is the framing of the press; B, the feed board; 0, theimpression-cylinder; D, the receiving-table at the opposite end of .thepress to the feed-board. The cylinder is to be fitted with grippers totake the sheet from the feedboard and hold it during the printing; but

these grippers, being well understood, are notrepresented. The rotarymotion of the cylinder and the reciprocating motion of the typebed(which is not shown) may be produced by the usual or suitable means.

F is a shaft which carries the delivery-grippers a. This shaft, insteadof being supported and carried in any of the well-known ways to and frobetween the cylinder and a position over the receiving-board, is fittedto and entirely supported in bearings in the front ends of two longjointed carrying-rods, which are arranged outside of the cylinder onopposite sides of the press, and each of which is composed of twosections, E E, connected by a rule-joint, b, which permits the twosections to fold or flex downward, but which, by reason of itsstop-shoulders being on the under side, prevent it from folding upwardor moving upward beyond or far above a right line drawn through the twosections of the rod. This may be understood by reference to Figs. 1, 3,and 5, Fig. 3 showing the rod straight with the stop-shouldersofitsjoint in contact, as it is when depositing the sheet on thereceivingboard, Fig. 1 showing it as having the greatest degree offlexure, as it has when the grippers are in position to take the sheetfrom the cylinder, and Fig. 5 showing it with an intermediate flexure.

The rear sections, E, of the gripper-shaftcarrying rods are oflever-like construction, as best shown in Fig. 6, which is a side viewof one of these sections and part of the sectionE of one rod, and theyare pivoted on pins 0, which project from two slides, d, which arefitted to slide on two fixed horizontal guiderods, e, secured one toeach side of the pressframing, near the rear end'thereof. The endportions of the rear sections, E, which project beyond their fulcrums,are forked or slotted lengthwise, as shown at f, to enable them to movelengthwise as well as oscillate on fixed fulcrum pins or studs 9, whichare firmly secured to each side of the press-frame alittle above theguide-rods e. The open extremities of the forks or slots f are shown atf as widened in flaring form to enable them to pass easily onto thefulcrum pins or studs g on their return to the said pins or studs afterhaving left them. The sliding boxes d are connected by rods h with twolevers, K, which are secured to a rock-shaft, G, which works in bearings in the lower part of the framing, and which constitutes the fulcrumof said levers, and one of the said levers is connected with a rod, H,which derives a reciprocating motion from a cam, L, on the main shaft Iof the press.

On each side of the cylinder, under or just in front of the feed-board,there is attached to the framing of the press a support, '5, for one ofthe two gripper-carrying rods E E. This support preferably consists of aroller flanged on each side, so that the rods, which always bear on thesaid rollers, are, by working between the flanges thereof, kept fromlateral displacement. There are also two supports, j, represented asconsisting of flanged rollers, like z, one for each carrying-rod,secured to the receiving-board or some adjacent part of the pressframeto support the said rods when they have moved forward with thedelivery-gri ppers t0 the position over the receiving-board in whichthey deliver the sheet.

The delivery-grippers a a, attached to the shaft F, fitted to oscillatein bearings in the front ends of the front sections, E, of thecarrying-rods E E, may be of any suitable construction, and may havetheir closing and opening movements, by which they are caused to takehold of the sheet on the cylinder and let go of it after having placedit over the receiving-board, produced by any suitable mechanism. It willsnlfice, however, for explanation of the present invention to say thatthe said grippers and their appurtenances, except that their shaft F isfitted to oscillate in hearings in the rods E E instead of in bearingsin carriages sliding on fixed ways, may be in all respects like thosedescribed and claimed in my application for Letters Patent filed January25, 1881.

The operation of the gr pper-carrying mechanism is as follows At thetime the deliverygrippers are taking the sheet from the cylinder by itsfront edge, with the last-printed face upward, the two sections EE ofthe grippershaftcarrying rods are folded and nearly doubled up, as shownin Fig. 1, their joints 1) being thrown far back from the pins 0, whichform the connections between the rear section, E, and the sliding boxes01 and rods h. After the sheet has been taken the cam L, by its actionon the rod H, draws forward the levers K, which, by means of the rods h,draw forward the slides 01 along the guide-rods e, and with them theflexed carrying-rods E E, which are connected with the pins 0. The saidrods then move bodily forward over the stationary supporting-rollers i,carrying the delivery-grippers toward the receiving-board. As the saidrods thus move forward the slotted portions of their rear sections, E,slide longitudinally on the pins or studs 9, and the said sections thenoperate as levers of the third order, of which the said pins or studs 9are the fnlcrums, and the consequence is that the lower ends of the saidsections, which are jointed at b to the front sections, E, move forwardwith a much greater velocity than the levers K and their connecting-rodsh. During this movement, which carries the sheet flying from thecylinder to the receiving-board, the leverlike sections E of thecarrying-rods turn almost completely over, as will be understood byreference to Figs.5 and 3, and a little before the delivery-grippersarrive in the position shown in Fig. 3 for dropping the sheet on thereceiving-board the shoulders of the rule-joint I) come in contact witheach other, and the rods are straight and practically rigid, and thelast portion of their movement is direct] y longitudinal. Besides thelever-like action involved in the movement of the sections E, there isalso a lever-like action of the sections E of the carrying-rods upon therollers or supports 6, which serve as fulcrums for this action, and bythis last-mentioned action the ends of the rods which carry thegrippershaft F are caused to describe an arc-shaped path, as indicatedby the dotted line is in Fig. 1, in which they rise from the cylinder,so that as they take. the sheet therefrom they do so with an upwardmotion, which causes its rear end to fly well above the ink-rollers.After the rods E E have become rigid, as above described, they come ontothe supporting-rollers j, which take the weight of the forward ends andof the grippers, and so steady the latter during the completion of theirforward movement. As the carrying-rods E E move back after depositingthe sheet, thefirst portion of their movement is directly longitudinal;but the forks f of the lever-like sec- ICC tions E, which may have left,their fnlcrumpins 9 in the forward movement, soon again pass onto thesaid pins, and during the continued backward movement the joints 1) ofthe said rods are flexed by the lever-like action of the said sectionsand the grippers are caused to be drawn back to the cylinder withanaccelerated motion relatively to the upper ends of the levers K.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a cylinder printing-press, the combination, with' the impression-cylinder, receiving-table, and delivery-grippers, of grippercarryingrods, each composed of two jointed sections and capable of folding orflexure,

' slides connected with therear sections of the which are jointed so asto be capable of foldin'g or flexure, and the rear one of which consistsof a slotted or forked lever, supports for the front sections of thesaid rods, guides for the rear sections thereof, and fixed fulcrums onwhich the lever-like rear sections slide, substantially as hereindescribed.

3. The combination of the jointed folding delivery-gripper-carrying rodsE E, having their rear sections of lever form, with slides 10 d, guidese, fulcrums g, supports 1', levers K, and connecting-rods h,substantially as herein described.

CALVERT B. COTTRELL. Witnesses:

FREDK. HAYNES, ALO. WEBB.

